VIV Response of Long Free Spanning Pipelines

Abstract

Vortex induced vibration (VIV) of free spanning pipelines in current is considered. In standard VIV estimation, one mode of oscillation is considered only. Increasing the length of the span, several modal shapes may be excited. Further, due to the sag effect of a long free span, the dynamic properties in vertical and horizontal direction of the span are different. This causes a much more complex VIV response pattern for long free spans than for short spans. The observed VIV response of long free spans during model testing is discussed. Hypotheses that may explain the observed behaviour are presented. Also a format of new design principles for long free spans is outlined.Copyright © 2002 by ASME

Original document

The different versions of the original document can be found in:

• http://pdfs.semanticscholar.org/c48a/355cb51b02f9e52ac88e5beeeabd84bd501b.pdf

• http://asmedigitalcollection.asme.org/OMAE/proceedings-pdf/doi/10.1115/OMAE2002-28075/4538462/121_1.pdf,

http://dx.doi.org/10.1115/omae2002-28075

• https://asmedigitalcollection.asme.org/OMAE/proceedings/OMAE2002/36118/121/293099,

http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1575847,

https://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1575847,

https://academic.microsoft.com/#/detail/2156512310